Winbond Electronics Corporation W25N01GVZEIR TR

Overview

W25N01GVZEIR TR from Winbond is a 1G-bit (128MB) Serial SLC NAND Flash memory with Dual/Quad SPI interface, organized into 65,536 pages of 2,048 bytes each and 1,024 uniform 128KB erasable blocks. It supports 104MHz SPI clocking, on-chip 1-bit ECC, hardware/software write protection, and operates from 2.7V to 3.6V for embedded code shadowing and data logging in space-constrained industrial controllers.

For engineers reviewing the W25N01GVZEIR TR datasheet, W25N01GVZEIR TR pinout, W25N01GVZEIR TR application, or W25N01GVZEIR TR equivalent, key selection criteria include buffer vs. continuous read mode behavior (BUF=1 default), WSON-8x6mm package compatibility, Quad I/O timing compliance, and ECC-enabled reliability for long-term firmware storage.

Technical Context

The W25N01GVZEIR TR implements a serial NAND architecture with dedicated internal 2,048-byte page buffer, supporting both Buffer Read (default power-up mode) and Continuous Read modes-enabling single-command sequential access across the full 1G-bit array without intermediate Page Data Read instructions. Its command set includes standard, dual, and quad SPI opcodes with 4-byte addressing support.

It integrates volatile and OTP-configurable registers: Protection Register (SR-1) with BP[3:0], WP-E, and SRP[1:0]; Configuration Register (SR-2) with ECC-E, BUF, and OTP-L bits; and Status Register-3 for real-time ECC-1/ECC-0, P-FAIL/E-FAIL, and BUSY monitoring-enabling robust bad block management via LUT access and programmable ECC enable/disable.

Key Specifications

Pinout & Package

W25N01GVZEIR TR is housed in an 8-pad WSON 8×6-mm package (JEDEC MO-252, package code ZE), with wettable flank leads for automated optical inspection and high-reliability reflow soldering.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Serial NAND Flash applications.

Compared with MX35LF1GE4AB and MT29F1G01ABAGDWB, W25N01GVZEIR TR offers unique BUF-mode flexibility, integrated ECC enable/disable control, and true SPI-native operation-making it optimal for new designs requiring firmware agility and minimal external components.

Availability

W25N01GVZEIR TR is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive infotainment boot memory, and medical diagnostic log storage requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for W25N01GVZEIR TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Winbond Electronics is a Taiwan-based global semiconductor manufacturer specializing in specialty memory solutions, including SPI NOR/NAND, PSRAM, and mobile DRAM.

The W25N SpiFlash family was designed specifically to bring NAND density and cost efficiency to SPI-bus constrained systems-enabling code shadowing, XIP execution, and high-volume data logging without parallel bus overhead.

FAQ

What is the default read mode for W25N01GVZEIR TR at power-up?

W25N01GVZEIR TR powers up in Buffer Read mode (BUF=1) as indicated by its "G" suffix in the part numbering scheme. This means the internal 2,048-byte buffer is enabled by default for page-aligned reads. The Continuous Read mode (BUF=0) must be explicitly selected via Write Status Register instruction (1Fh) to SR-2, bit 0. This setting persists until next power cycle or explicit reconfiguration.

Does W25N01GVZEIR TR support Quad SPI commands without external level shifters?

Yes, W25N01GVZEIR TR supports native Quad SPI operation (IO0–IO3) within its 2.7–3.6 V supply range, with all I/O pins tolerant to VCC-referenced signaling. No external level shifters are required when interfacing with 3.3 V microcontrollers. The /WP and /HOLD pins function as IO2 and IO3 respectively in Quad mode when WP-E=0, and timing complies with AC specs up to 104 MHz CLK.

How does the on-chip ECC in W25N01GVZEIR TR operate, and can it be disabled?

W25N01GVZEIR TR implements 1-bit ECC per 528-byte sector using on-die logic. ECC is enabled or disabled via the ECC-E bit (bit 4) in Status Register-2 (SR-2), which is volatile and writable via Write Status Register instruction. When disabled, raw data is returned without correction or status reporting; when enabled, ECC-1/ECC-0 bits in Status Register-3 indicate correction success or uncorrectable error.

What package type does W25N01GVZEIR TR use, and what are its key mechanical features?

W25N01GVZEIR TR uses the 8-pad WSON 8×6-mm package (package code ZE), compliant with JEDEC MO-252. It features wettable flank leads for automated optical inspection, a thermal pad on the bottom for enhanced heat dissipation, and a 0.5 mm lead pitch. This package enables high-density routing and reliable reflow soldering in compact industrial and automotive PCB layouts.

Can W25N01GVZEIR TR be used for secure firmware storage with hardware-based write protection?

Yes, W25N01GVZEIR TR provides hardware write protection via the /WP pin when WP-E=1 in the Protection Register. With /WP tied to GND, all program, erase, and register-write operations-including OTP page programming-are disabled, rendering the entire device read-only. This meets secure boot requirements where firmware immutability must be enforced at the hardware level, independent of software state.